J. Mater. Sci. Technol. ›› 2016, Vol. 32 ›› Issue (12): 1211-1221.DOI: 10.1016/j.jmst.2016.07.001
Special Issue: 2016腐蚀与防护专辑
• Orginal Article • Next Articles
Pan Fusheng1,2(
),Yang Mingbo1,3,Chen Xianhua1(
)
Received:2016-03-19
Accepted:2016-06-01
Online:2016-12-20
Published:2017-02-16
Pan Fusheng,Yang Mingbo,Chen Xianhua. A Review on Casting Magnesium Alloys: Modification of Commercial Alloys and Development of New Alloys[J]. J. Mater. Sci. Technol., 2016, 32(12): 1211-1221.
| Compositions (wt%) | Casting processes | Tensile properties ------------- | Fatigue properties (MPa) | References | ||
|---|---|---|---|---|---|---|
| UTS (MPa) | YS (MPa) | δ (%) | ||||
| AZ91 + 1.0Ce | HPDC | 248 | 158 | 6.8 | 116 (107 cycles) | Yang et al.[ |
| AZ91 + 2.0Ce | HPDC | 227 | 144 | 6.1 | 106 (107 cycles) | |
| AZ91 + 1.0Nd | HPDC | 258 | 164 | 5.6 | 85 (107 cycles) | Yang and Li[ |
| AZ91 + 1.5Nd | HPDC | 241 | 154 | 5.0 | 79 (107 cycles) | |
| AZ91 + 0.5Y | HPDC | 270 | 162 | 10.0 | - | Zhang et al. [ |
| AZ91 + 0.8Y | HPDC | 272 | 161 | 11.0 | - | |
| AZ91 + 0.032B | PM | 226 | 110 | 4.8 | - | Suresh et al.[ |
| AZ91 + 0.04B | PM | 229 | 113 | 4.9 | - | |
| AZ91 + 1.0Bi | PM | 250 | 166 | 4.6 | - | Yuan et al.[ |
| AZ91 + 0.4Sb | PM | 264 | 177 | 4.5 | - | |
| AZ91 + 1.0Bi+0.4Sb | PM | 269 | 178 | 3.3 | - | |
| AZ91 + 0.8Pr | HPDC | 228 | 137 | 6.8 | - | Cui et al.[ |
| AZ91 + 1.2Pr | HPDC | 222 | 128 | 6.2 | - | |
| AZ91 + 1.0Ca+0.5Sr | HPDC | 250 | - | 3.5 | - | Hirai et al.[ |
| AZ91 + 0.5Ti | PM | 170 | 140 | 4.0 | - | Candan et al.[ |
| AZ91 + 1.0Y+1.0Ca | HPDC | 232 | 168 | 3.7 | - | Wang et al.[ |
| AZ91 + 1.0Y+1.5Ca | HPDC | 241 | 183 | 3.2 | - | |
| AZ91 + 0.2Si+0.2Sb | HPDC | 231 | 135 | 5.8 | - | Srinivasan et al.[ |
| AZ91 + 0.5Si+0.2Sb | HPDC | 224 | 126 | 3.7 | - | |
Table 1. As-cast RT mechanical properties of modified-AZ91 alloys with various additions
| Compositions (wt%) | Casting processes | Tensile properties ------------- | Fatigue properties (MPa) | References | ||
|---|---|---|---|---|---|---|
| UTS (MPa) | YS (MPa) | δ (%) | ||||
| AZ91 + 1.0Ce | HPDC | 248 | 158 | 6.8 | 116 (107 cycles) | Yang et al.[ |
| AZ91 + 2.0Ce | HPDC | 227 | 144 | 6.1 | 106 (107 cycles) | |
| AZ91 + 1.0Nd | HPDC | 258 | 164 | 5.6 | 85 (107 cycles) | Yang and Li[ |
| AZ91 + 1.5Nd | HPDC | 241 | 154 | 5.0 | 79 (107 cycles) | |
| AZ91 + 0.5Y | HPDC | 270 | 162 | 10.0 | - | Zhang et al. [ |
| AZ91 + 0.8Y | HPDC | 272 | 161 | 11.0 | - | |
| AZ91 + 0.032B | PM | 226 | 110 | 4.8 | - | Suresh et al.[ |
| AZ91 + 0.04B | PM | 229 | 113 | 4.9 | - | |
| AZ91 + 1.0Bi | PM | 250 | 166 | 4.6 | - | Yuan et al.[ |
| AZ91 + 0.4Sb | PM | 264 | 177 | 4.5 | - | |
| AZ91 + 1.0Bi+0.4Sb | PM | 269 | 178 | 3.3 | - | |
| AZ91 + 0.8Pr | HPDC | 228 | 137 | 6.8 | - | Cui et al.[ |
| AZ91 + 1.2Pr | HPDC | 222 | 128 | 6.2 | - | |
| AZ91 + 1.0Ca+0.5Sr | HPDC | 250 | - | 3.5 | - | Hirai et al.[ |
| AZ91 + 0.5Ti | PM | 170 | 140 | 4.0 | - | Candan et al.[ |
| AZ91 + 1.0Y+1.0Ca | HPDC | 232 | 168 | 3.7 | - | Wang et al.[ |
| AZ91 + 1.0Y+1.5Ca | HPDC | 241 | 183 | 3.2 | - | |
| AZ91 + 0.2Si+0.2Sb | HPDC | 231 | 135 | 5.8 | - | Srinivasan et al.[ |
| AZ91 + 0.5Si+0.2Sb | HPDC | 224 | 126 | 3.7 | - | |
| Compositions (wt%) | Casting processes | UTS (MPa) | YS (MPa) | δ (%) | References |
|---|---|---|---|---|---|
| AM60 + 0.2Ti | PM | 284 | - | 11.2 | He et al.[ |
| AM60 + 0.4Ti | PM | 276 | - | 9.8 | |
| AM60 + 0.5Sn | Squeeze casting | 182 | - | 10.0 | Sevik et al.[ |
| AM60 + 4.0Sn | Squeeze casting | 212 | - | 8.1 | |
| AM60 + 1Sn+0.3Ti | Squeeze casting | 190 | 115 | 9.3 | Acikgoz et al.[ |
| AM60 + 1Sn+0.3Ti+0.5Ag | Squeeze casting | 250 | 123 | 9.0 | |
| AM60 + 1Sn+0.3Ti+1.0Ag | Squeeze casting | 265 | 128 | 8.8 | |
| AM60 + 1.8Si+0.32Ca | PM | 182 | - | 8.5 | Wang et al.[ |
| AM60 + 0.9Y | PM | 192 | 62 | 12.6 | Su et al.[ |
| AM60 + 0.9Nd | PM | 230 | 127 | 14.0 | Mao et al.[ |
| AM60 + 0.15B | PM | 160 | - | 5.7 | Wang et al.[ |
| AM60 + 1.6RE | PM | 170 | - | 6.2 | |
| AM60 + 0.15B+1.6RE | PM | 185 | - | 6.0 |
Table 2. As-cast RT tensile properties of modified-AM60 alloys with various additions
| Compositions (wt%) | Casting processes | UTS (MPa) | YS (MPa) | δ (%) | References |
|---|---|---|---|---|---|
| AM60 + 0.2Ti | PM | 284 | - | 11.2 | He et al.[ |
| AM60 + 0.4Ti | PM | 276 | - | 9.8 | |
| AM60 + 0.5Sn | Squeeze casting | 182 | - | 10.0 | Sevik et al.[ |
| AM60 + 4.0Sn | Squeeze casting | 212 | - | 8.1 | |
| AM60 + 1Sn+0.3Ti | Squeeze casting | 190 | 115 | 9.3 | Acikgoz et al.[ |
| AM60 + 1Sn+0.3Ti+0.5Ag | Squeeze casting | 250 | 123 | 9.0 | |
| AM60 + 1Sn+0.3Ti+1.0Ag | Squeeze casting | 265 | 128 | 8.8 | |
| AM60 + 1.8Si+0.32Ca | PM | 182 | - | 8.5 | Wang et al.[ |
| AM60 + 0.9Y | PM | 192 | 62 | 12.6 | Su et al.[ |
| AM60 + 0.9Nd | PM | 230 | 127 | 14.0 | Mao et al.[ |
| AM60 + 0.15B | PM | 160 | - | 5.7 | Wang et al.[ |
| AM60 + 1.6RE | PM | 170 | - | 6.2 | |
| AM60 + 0.15B+1.6RE | PM | 185 | - | 6.0 |
| Compositions (wt%) | Test conditions | UTS (MPa) | YS (MPa) | δ (%) | References |
|---|---|---|---|---|---|
| Mg-4.0Y-2.4Nd-0.2Zn-0.4Zr | PM-T6 | 345 | 196 | 7.3 | Fu et al.[ |
| Mg-4.0Y-2.0Nd-1Gd-0.4Zr | PM-T6 | 330 | 265 | 6.5 | Su et al.[ |
| Mg-4.2Y-2.5Nd-1Gd-0.6Zr | PM-T6 | 284 | 222 | 2.4 | Kang et al.[ |
| Mg-4.2Y-2.5Nd-1Gd-0.2Zn-0.6Zr | PM-T6 | 298 | 240 | 4.6 | |
| Mg-4.0Y-2.8Nd-0.2Zn-0.4Zr | PM-as-cast | 205 ± 8 | 162 ± 7 | 5.0 ± 0.4 | Pan's group in CCMg |
| PM-T6 | 304 ± 8 | 225 ± 5 | 6.4 ± 0.3 |
Table 3. RT Tensile properties for some modified-WE43 alloys with Zn and/or Gd additions
| Compositions (wt%) | Test conditions | UTS (MPa) | YS (MPa) | δ (%) | References |
|---|---|---|---|---|---|
| Mg-4.0Y-2.4Nd-0.2Zn-0.4Zr | PM-T6 | 345 | 196 | 7.3 | Fu et al.[ |
| Mg-4.0Y-2.0Nd-1Gd-0.4Zr | PM-T6 | 330 | 265 | 6.5 | Su et al.[ |
| Mg-4.2Y-2.5Nd-1Gd-0.6Zr | PM-T6 | 284 | 222 | 2.4 | Kang et al.[ |
| Mg-4.2Y-2.5Nd-1Gd-0.2Zn-0.6Zr | PM-T6 | 298 | 240 | 4.6 | |
| Mg-4.0Y-2.8Nd-0.2Zn-0.4Zr | PM-as-cast | 205 ± 8 | 162 ± 7 | 5.0 ± 0.4 | Pan's group in CCMg |
| PM-T6 | 304 ± 8 | 225 ± 5 | 6.4 ± 0.3 |
Fig. 4. TEM images (a and b) and SAED patterns (c) of the solution-treated Mg-4Y-2Nd-1Gd-0.4Zr alloy aged at 200 °C for 136 h along [0001]α axis zone[1,56].
Fig. 6. Corrosion rate of AZ91 and AM60 magnesium alloys by weight loss measured in 3.5% NaCl solution for 36 h (a) and polarization curves of AZ91 alloy with different Fe content (b).
| Experimental alloys | Ecorr (VSCE) | icorr (μA cm-2) | Pi (mm/y) |
|---|---|---|---|
| AZ91-35 ppm Fe | -1.34 | 5.26 | 0.12 |
| AZ91-65 ppm Fe | -1.44 | 46.95 | 1.07 |
| AZ91-150 ppm Fe | -1.33 | 108.38 | 2.47 |
Table 4. Corrosion properties in 3.5% NaCl solution for the AZ91 alloy with different Fe contents
| Experimental alloys | Ecorr (VSCE) | icorr (μA cm-2) | Pi (mm/y) |
|---|---|---|---|
| AZ91-35 ppm Fe | -1.34 | 5.26 | 0.12 |
| AZ91-65 ppm Fe | -1.44 | 46.95 | 1.07 |
| AZ91-150 ppm Fe | -1.33 | 108.38 | 2.47 |
| Compositions (wt%) | Test conditions | Tensile properties ------------------------------ | Creep properties (×10-8 s-1) | References | |||||
|---|---|---|---|---|---|---|---|---|---|
| Room temperature ----------------- | 150 °C --------- | ||||||||
| UTS (MPa) | YS (MPa) | δ (%) | UTS (MPa) | YS (MPa) | δ (%) | ||||
| AZ81-1.5Ce-0.1Sr | HPDC-as-cast | 275 ± 9 | 163 ± 8 | 10.4 ± 0.3 | - | - | - | - | Pan's group in CCMg |
| AZ81-1.0Y-0.1Sr | HPDC-as-cast | 258 ± 8 | 144 ± 5 | 7.7 ± 0.3 | - | - | - | - | |
| AE81M | PM-as-as-cast | 280 ± 6 | 100 ± 4 | 16 ± 0.7 | - | - | - | - | |
| AZ61-0.7Si-0.1Sr | PM-as-cast | 184 | 115 | 5.9 | 173 | 108 | 18.1 | 1.18a | Yang et al.[69] |
| AZ61-0.7Si-0.4Sb | PM-as-cast | 175 | 99 | 5.0 | 160 | 91 | 16.0 | 1.27a | |
| ZA84-1.0Sn | PM-as-cast | 194 | 149 | 4.3 | 175 | 134 | 14.6 | 1.14a | Yang and Pan[106] |
| ZA84-0.1Sr | PM-as-cast | 190 | 152 | 4.9 | 174 | 136 | 15.8 | 2.86a | Yang et al.[107] |
| Mg-3.8Zn-2.2Ca-1.0Ce | PM-as-cast | 146 | 119 | 3.5 | 133 | 109 | 9.9 | 0.90a | Yang et al.[108] |
| Mg-3Sn-2Ca-1.5Ce | PM-as-cast | 157 | 140 | 3.4 | 142 | 131 | 14.9 | 2.97b | Yang et al.[109] |
| Mg-3Sn-2Ca-1.5Y | PM-as-cast | 150 | 137 | 3.2 | 139 | 129 | 14.1 | 3.11b | Yang and Pan[110] |
| Mg-3Sn-2Ca-0.5Gd | PM-as-cast | 145 | 131 | 3.0 | 132 | 125 | 13.6 | 4.47b | Yang et al.[111] |
| Mg-3Sn-2Sr-1.0Ce | PM-as-cast | 153 | 117 | 4.6 | 137 | 104 | 20.0 | 3.89b | Yang et al.[112] |
| Mg-3Sn-1Mn-1.0Ce | PM-as-cast | 165 | 134 | 3.9 | 148 | 122 | 15.4 | 3.34a | Pan and Yang[113] |
| Mg-4.5Zn-4.5Sn-2Al-0.2Sr | PM-as-cast | 238 | - | 12.1 | 133 | - | 24.3 | - | He et al.[115] |
| Mg-6Al-4Zn-0.6Sn | PM-as-cast | 240 | 116 | 10.7 | - | - | - | - | Dong et al.[116] |
| Mg-8.0Zn-1.0Al- 0.5Cu-0.5Mn | PM-as-cast | 250 | 97 | 17.1 | - | - | - | - | Wang et al.[117] |
Table 5. Tensile and/or creep properties for some low cost casting magnesium alloys
| Compositions (wt%) | Test conditions | Tensile properties ------------------------------ | Creep properties (×10-8 s-1) | References | |||||
|---|---|---|---|---|---|---|---|---|---|
| Room temperature ----------------- | 150 °C --------- | ||||||||
| UTS (MPa) | YS (MPa) | δ (%) | UTS (MPa) | YS (MPa) | δ (%) | ||||
| AZ81-1.5Ce-0.1Sr | HPDC-as-cast | 275 ± 9 | 163 ± 8 | 10.4 ± 0.3 | - | - | - | - | Pan's group in CCMg |
| AZ81-1.0Y-0.1Sr | HPDC-as-cast | 258 ± 8 | 144 ± 5 | 7.7 ± 0.3 | - | - | - | - | |
| AE81M | PM-as-as-cast | 280 ± 6 | 100 ± 4 | 16 ± 0.7 | - | - | - | - | |
| AZ61-0.7Si-0.1Sr | PM-as-cast | 184 | 115 | 5.9 | 173 | 108 | 18.1 | 1.18a | Yang et al.[69] |
| AZ61-0.7Si-0.4Sb | PM-as-cast | 175 | 99 | 5.0 | 160 | 91 | 16.0 | 1.27a | |
| ZA84-1.0Sn | PM-as-cast | 194 | 149 | 4.3 | 175 | 134 | 14.6 | 1.14a | Yang and Pan[106] |
| ZA84-0.1Sr | PM-as-cast | 190 | 152 | 4.9 | 174 | 136 | 15.8 | 2.86a | Yang et al.[107] |
| Mg-3.8Zn-2.2Ca-1.0Ce | PM-as-cast | 146 | 119 | 3.5 | 133 | 109 | 9.9 | 0.90a | Yang et al.[108] |
| Mg-3Sn-2Ca-1.5Ce | PM-as-cast | 157 | 140 | 3.4 | 142 | 131 | 14.9 | 2.97b | Yang et al.[109] |
| Mg-3Sn-2Ca-1.5Y | PM-as-cast | 150 | 137 | 3.2 | 139 | 129 | 14.1 | 3.11b | Yang and Pan[110] |
| Mg-3Sn-2Ca-0.5Gd | PM-as-cast | 145 | 131 | 3.0 | 132 | 125 | 13.6 | 4.47b | Yang et al.[111] |
| Mg-3Sn-2Sr-1.0Ce | PM-as-cast | 153 | 117 | 4.6 | 137 | 104 | 20.0 | 3.89b | Yang et al.[112] |
| Mg-3Sn-1Mn-1.0Ce | PM-as-cast | 165 | 134 | 3.9 | 148 | 122 | 15.4 | 3.34a | Pan and Yang[113] |
| Mg-4.5Zn-4.5Sn-2Al-0.2Sr | PM-as-cast | 238 | - | 12.1 | 133 | - | 24.3 | - | He et al.[115] |
| Mg-6Al-4Zn-0.6Sn | PM-as-cast | 240 | 116 | 10.7 | - | - | - | - | Dong et al.[116] |
| Mg-8.0Zn-1.0Al- 0.5Cu-0.5Mn | PM-as-cast | 250 | 97 | 17.1 | - | - | - | - | Wang et al.[117] |
| Compositions (wt%) | Ecorr (V) | Icorr (A) | Rp (Ω) | Corrosion rate in 3.5% NaCl solution (g m-2 h-1) |
|---|---|---|---|---|
| AZ81-1.5Ce-0.1Sr | -1.527 | 2.018 × 10-6 | 8924.5 | 10.168 |
| AZ81-1.0Y-0.1Sr | -1.492 | 4.491 × 10-7 | 25039.05 | 9.236 |
| Commercial AZ91 | -1.433 | 3.921 × 10-4 | 69.9 | 17.245 |
Table 6. Corrosion properties for the HPDC Mg-Al based alloys developed in CCMg
| Compositions (wt%) | Ecorr (V) | Icorr (A) | Rp (Ω) | Corrosion rate in 3.5% NaCl solution (g m-2 h-1) |
|---|---|---|---|---|
| AZ81-1.5Ce-0.1Sr | -1.527 | 2.018 × 10-6 | 8924.5 | 10.168 |
| AZ81-1.0Y-0.1Sr | -1.492 | 4.491 × 10-7 | 25039.05 | 9.236 |
| Commercial AZ91 | -1.433 | 3.921 × 10-4 | 69.9 | 17.245 |
| Compositions (wt%) | Test conditions | UTS (MPa) | YS (MPa) | δ (%) | Fatigue properties (MPa) |
|---|---|---|---|---|---|
| AZ91-0.5X | LPSMC-as-cast | 197 | 103 | 7.8 | - |
| LPSMC-T6 | 255 | 155 | 4.2 | 90 (>105 cycles) |
Table 7. As-cast RT mechanical properties for modified-AZ91 LPSMC alloys developed in CCMg
| Compositions (wt%) | Test conditions | UTS (MPa) | YS (MPa) | δ (%) | Fatigue properties (MPa) |
|---|---|---|---|---|---|
| AZ91-0.5X | LPSMC-as-cast | 197 | 103 | 7.8 | - |
| LPSMC-T6 | 255 | 155 | 4.2 | 90 (>105 cycles) |
| Compositions (wt%) | Test conditions | Ecorr (V) | Icorr (A) | Rp (Ω) | Corrosion rate (mL cm-2 h-1) |
|---|---|---|---|---|---|
| AZ91-0.5X | LPSMC-as-cast | -1.410 | 10.00 | 6001.5 | 0.036 |
| LPSMC-T6 | -1.394 | 7.38 | 7472.7 | 0.019 | |
| Commercial AZ91 alloy | LPSMC-as-cast | -1.417 | 81.79 | 890.3 | 0.056 |
| LPSMC-T6 | -1.443 | 31.36 | 2196.3 | 0.030 |
Table 8. Corrosion properties in 3.5% NaCl solution for the modified-AZ91 developed in CCMg
| Compositions (wt%) | Test conditions | Ecorr (V) | Icorr (A) | Rp (Ω) | Corrosion rate (mL cm-2 h-1) |
|---|---|---|---|---|---|
| AZ91-0.5X | LPSMC-as-cast | -1.410 | 10.00 | 6001.5 | 0.036 |
| LPSMC-T6 | -1.394 | 7.38 | 7472.7 | 0.019 | |
| Commercial AZ91 alloy | LPSMC-as-cast | -1.417 | 81.79 | 890.3 | 0.056 |
| LPSMC-T6 | -1.443 | 31.36 | 2196.3 | 0.030 |
| Series | Compositions (wt%) | Test conditions | UTS (MPa) | YS (MPa) | δ (%) | References |
|---|---|---|---|---|---|---|
| Mg-Gd-Y | Mg-8Gd-3Y-0.4Zr | PM-T6 | 362 | 222 | 7.6 | Fu et al.[ |
| Mg-10Gd-2Y-0.4Zr | PM-T6 | 362 | 239 | 4.7 | ||
| Mg-10Gd-3Y-0.4Zr | PM-T6 | 370 | 241 | 4.1 | ||
| Mg-12Gd-3Y-0.4Zr | PM-T6 | 328 | 246 | 1.1 | ||
| Mg-10.4Gd-3.3Y-0.46Zr | PM-T6 | 348 | 237 | 3.0 | Liu et al.[ | |
| Mg-10Gd-3.74Y-0.25Zr | PM-T6 | 325 | 268 | 5.1 | Li et al.[ | |
| Mg-9Gd-4Y-Zr | PM-T6 | 327 | 279 | 3.3 | Xiao et al.[ | |
| Mg-Gd-Sm | Mg-8Gd-2Sm-Zr | PM-T6 | 329 | 195 | 7.7 | Fu et al.[ |
| Mg-10Gd-2Sm-Zr | PM-T6 | 347 | 237 | 3.2 | ||
| Mg-Gd-Nd | Mg-6Gd-2Nd-Zr | PM-T6 | 342 | 182 | 7.9 | |
| Mg-8Gd-2Nd-Zr | PM-T6 | 342 | 200 | 5.0 | ||
| Mg-11Gd-2Nd-Zr | PM-T6 | 353 | 224 | 3.7 | ||
| Mg-Gd-Y/Dy-Zn | Mg-10Gd-3Y-1.0Zn-0.4Z | PM-T6 | 364 | 253 | 2.0 | Liu et al.[119] |
| Mg-10Gd-3Y-1.2Zn-0.4Zr | PM-T6 | 330 | 230 | 3.0 | Li et al.[122] | |
| Mg-3.2Gd-0.5Zn-0.2Zr (at.%) | PM-T6 | 405 | 278 | 2.5 | Ozaki et al.[123] | |
| Mg-14Gd-3Y-1.8Zn-0.5Zr | PM-T6 | 366 | 230 | 2.8 | Zhang et al.[124] | |
| Mg-6.5Gd-2.5Dy-1.8Zn | PM-T6 | 392 | 295 | 6.1 | Zhang et al.[125] | |
| Mg-2.5Gd-1.0Zn-0.16Zr (at.%) | SM-T6 | 366 | 260 | 3.3 | He et al.[126] | |
| Mg-14Gd-2Zn-0.5Zr | SCC-T6 | 404 | 292 | 5.3 | Wu et al.[133] | |
| Mg-Gd-Ag | Mg-3.4Gd-0.5Ag-0.11Zr (at.%) | PM-T6 | 414 | 293 | 2.2 | Yamada et al.[129] |
| Mg-8.5Gd-2.3Y-1.8Ag-0.4Zr | PM-T6 | 403 | 268 | 4.9 | Wang et al.[130] | |
| Mg-16Gd-2Ag-0.3Zr | PM-T6 | 423 | 328 | 2.6 | Zhang et al.[131] | |
| Mg-Nd-Zn | Mg-2.75Nd-0.4Zr-0.2Zn | PM-T6 | 305 | 155 | 11.3 | Fu et al.[132] |
| Mg-2.75Nd-0.4Zr-0.5Zn | PM-T6 | 313 | 162 | 10.9 | ||
| Mg-1.75Nd-0.4Zr-0.2Zn | PM-T6 | 278 | 126 | 14.0 | ||
| Mg-2.25Nd-0.4Zr-0.2Zn | PM-T6 | 298 | 139 | 13.6 | ||
| Mg-3.00Nd-0.4Zr-0.2Zn | PM-T6 | 318 | 165 | 11.0 |
Table 9. RT tensile properties for parts of high strength casting Mg alloys
| Series | Compositions (wt%) | Test conditions | UTS (MPa) | YS (MPa) | δ (%) | References |
|---|---|---|---|---|---|---|
| Mg-Gd-Y | Mg-8Gd-3Y-0.4Zr | PM-T6 | 362 | 222 | 7.6 | Fu et al.[ |
| Mg-10Gd-2Y-0.4Zr | PM-T6 | 362 | 239 | 4.7 | ||
| Mg-10Gd-3Y-0.4Zr | PM-T6 | 370 | 241 | 4.1 | ||
| Mg-12Gd-3Y-0.4Zr | PM-T6 | 328 | 246 | 1.1 | ||
| Mg-10.4Gd-3.3Y-0.46Zr | PM-T6 | 348 | 237 | 3.0 | Liu et al.[ | |
| Mg-10Gd-3.74Y-0.25Zr | PM-T6 | 325 | 268 | 5.1 | Li et al.[ | |
| Mg-9Gd-4Y-Zr | PM-T6 | 327 | 279 | 3.3 | Xiao et al.[ | |
| Mg-Gd-Sm | Mg-8Gd-2Sm-Zr | PM-T6 | 329 | 195 | 7.7 | Fu et al.[ |
| Mg-10Gd-2Sm-Zr | PM-T6 | 347 | 237 | 3.2 | ||
| Mg-Gd-Nd | Mg-6Gd-2Nd-Zr | PM-T6 | 342 | 182 | 7.9 | |
| Mg-8Gd-2Nd-Zr | PM-T6 | 342 | 200 | 5.0 | ||
| Mg-11Gd-2Nd-Zr | PM-T6 | 353 | 224 | 3.7 | ||
| Mg-Gd-Y/Dy-Zn | Mg-10Gd-3Y-1.0Zn-0.4Z | PM-T6 | 364 | 253 | 2.0 | Liu et al.[119] |
| Mg-10Gd-3Y-1.2Zn-0.4Zr | PM-T6 | 330 | 230 | 3.0 | Li et al.[122] | |
| Mg-3.2Gd-0.5Zn-0.2Zr (at.%) | PM-T6 | 405 | 278 | 2.5 | Ozaki et al.[123] | |
| Mg-14Gd-3Y-1.8Zn-0.5Zr | PM-T6 | 366 | 230 | 2.8 | Zhang et al.[124] | |
| Mg-6.5Gd-2.5Dy-1.8Zn | PM-T6 | 392 | 295 | 6.1 | Zhang et al.[125] | |
| Mg-2.5Gd-1.0Zn-0.16Zr (at.%) | SM-T6 | 366 | 260 | 3.3 | He et al.[126] | |
| Mg-14Gd-2Zn-0.5Zr | SCC-T6 | 404 | 292 | 5.3 | Wu et al.[133] | |
| Mg-Gd-Ag | Mg-3.4Gd-0.5Ag-0.11Zr (at.%) | PM-T6 | 414 | 293 | 2.2 | Yamada et al.[129] |
| Mg-8.5Gd-2.3Y-1.8Ag-0.4Zr | PM-T6 | 403 | 268 | 4.9 | Wang et al.[130] | |
| Mg-16Gd-2Ag-0.3Zr | PM-T6 | 423 | 328 | 2.6 | Zhang et al.[131] | |
| Mg-Nd-Zn | Mg-2.75Nd-0.4Zr-0.2Zn | PM-T6 | 305 | 155 | 11.3 | Fu et al.[132] |
| Mg-2.75Nd-0.4Zr-0.5Zn | PM-T6 | 313 | 162 | 10.9 | ||
| Mg-1.75Nd-0.4Zr-0.2Zn | PM-T6 | 278 | 126 | 14.0 | ||
| Mg-2.25Nd-0.4Zr-0.2Zn | PM-T6 | 298 | 139 | 13.6 | ||
| Mg-3.00Nd-0.4Zr-0.2Zn | PM-T6 | 318 | 165 | 11.0 |
Fig. 10. HAADF-STEM images showing β’ precipitates for the Mg-2.66 at.% Gd alloy (a) and β’ (seeing arrows) /β’’ (seeing rectangle) precipitates for the Mg-0.5 at.%Nd alloys aged at 200 °C for 10 h (b) and 170 °C for 100 h (c). The electron beam is parallel to [0001]α[1].
Fig. 12. Bright field TEM micrograph (a) and its corresponding SAED pattern (b) for the Mg-16Gd-2Ag-0.3Zr alloy aged at 200 °C for 32 h along [0001]α axis zone [131].
| Compositions (wt%) | Test conditions | UTS (MPa) | YS (MPa) | δ (%) |
|---|---|---|---|---|
| Mg-7.5Gd-2Y-1Ag -0.5Zr | LPSMC-as-cast | 255 ± 8 | 164 ± 5 | 5.0 ± 0.5 |
| LPSMC-T6 | 352 ± 11 | 193 ± 5 | 4.2 ± 0.3 | |
| Mg-9Gd-2Y-1Ag -0.5Zr | LPSMC-as-cast | 220 ± 8 | 116 ± 6 | 5.8 ± 0.2 |
| LPSMC-T6 | 399 ± 7 | 187 ± 7 | 7.3 ± 0.5 | |
| Mg-4Gd-3Y-2Zn-0.6Zr | LPSMC-as-cast | 218 ± 7 | 125 ± 4 | 15.8 ± 0.7 |
| Mg-6Gd-3Y-2Zn-0.6Zr | LPSMC-as-cast | 223 ± 9 | 144 ± 4 | 14.0 ± 0.7 |
| Mg-8Gd-3Y-2Zn-0.6Zr | LPSMC-as-cast | 231 ± 6 | 151 ± 3 | 11.1 ± 0.4 |
Table 10. RT tensile properties for parts of high strength casting Mg alloys developed in CCMg
| Compositions (wt%) | Test conditions | UTS (MPa) | YS (MPa) | δ (%) |
|---|---|---|---|---|
| Mg-7.5Gd-2Y-1Ag -0.5Zr | LPSMC-as-cast | 255 ± 8 | 164 ± 5 | 5.0 ± 0.5 |
| LPSMC-T6 | 352 ± 11 | 193 ± 5 | 4.2 ± 0.3 | |
| Mg-9Gd-2Y-1Ag -0.5Zr | LPSMC-as-cast | 220 ± 8 | 116 ± 6 | 5.8 ± 0.2 |
| LPSMC-T6 | 399 ± 7 | 187 ± 7 | 7.3 ± 0.5 | |
| Mg-4Gd-3Y-2Zn-0.6Zr | LPSMC-as-cast | 218 ± 7 | 125 ± 4 | 15.8 ± 0.7 |
| Mg-6Gd-3Y-2Zn-0.6Zr | LPSMC-as-cast | 223 ± 9 | 144 ± 4 | 14.0 ± 0.7 |
| Mg-8Gd-3Y-2Zn-0.6Zr | LPSMC-as-cast | 231 ± 6 | 151 ± 3 | 11.1 ± 0.4 |
|
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